Kreis



(No Model.) 2 Sheets-Sheet 1.

J. R. VON KINK & J. G. KREIS.

MACHINE FOR CUTTING WOOD.

Patented Au 12, 1890.

mil m1 I lu u] INVENTORS:

WITNESSES: Xm

(No Model.) 2 Sheets-Sheet 2.

J. R. VON KINK & 'J. G. KREIS;

MACHINE FOR CUTTING WOOD. v No. 434,112. Patented Aug. 12, 1890.

INV'ENTORS: WITNESSES: MMJAM w I UNITED STATES PATENT OFFICE.

JULIUS BITTER VON KINK, OF VIENNA, AUSTRIA-HUN GARY, AND J OHANN GEORGKREIS, OF IVIESBADEN, GERMANY.

MACHINE FOR CUTTING WOOD.

SPECIFICATION forming part of Letters Patent No. 434,112, dated August12, 1890.

Application filed July 13,1889. Serial No. 317,415. (No model.) Patentedin France October 18, 1887, No. 186,455,- in Norway October 18, 1887,No. 767; in Sweden October 18, 1887, No. 1,648; in Germany October 19,1887, No. 43,670; in Belgium October 20,1887,No. 79,256; inAustria-Hungary February 28,1888, No. 38,593 and No. 2,741.

To all whom it may concern:

Beit known that we, JULIUS RITTER VON KINK, a subject of the Emperor ofAustria- I-Iungary, residing at Vienna, Austria Hungary, and J OHANNGnonc KREIS, a subject of the Emperor of Germany, residing at Wiesbaden,Germany, and now in Heinrichsthal, Moravia, have invented certain newand useful Improvements in Machines for Cutting Vood,

[o (for which we have obtained Letters Patent in Austria-Hungary, No.38,593 and No. 2,741, dated February 28, 1888; in Germany, No. 43,670,dated October 19, 1887; in France, No. 186,455, dated October 18, 1887;in Norway,

No. 767, dated October 18, 1887; in Belgium, No. 79,256, dated October20, 1887, and in Sweden, No. 1,648, dated October 18, 1887,) of whichthe following is a specification.

This invention relates to machines for the mechanical preparation ofwood forthe manufacture of cellulose and also to machines for reducingwood to a fibrous condition; and it has for its object to provide animproved machine of this character.

To this end in carrying out our invention we construct our machine sothat the. reciprocation of the cutting-knife will be practicallycounterbalanced, and the machine will therefore run smoothly whileworking.

0 We also provide means for increasing the effectiveness of thecutting-stroke of the knife, for regulating the feed of the wood to becut, and for adjusting the feed-rollers to the Wood.

In the accompanying drawings, which illustrate a wood-cutting machineembodying our invention, Figure 1 is a front elevation of such a machinewith two of the feedingrollers removed. Fig. 2 is a side elevation 1thereof partlyin vertical section. Fig. 3 is a 0 fragmentary front viewof another form of our invention. Fig. 4 is a fragmentary ob- .liqnesection thereof cut on the line 4 4 in Fig. 5. Fig. 5 is a fragmentaryvertical section thereof cut on the line 5 5 in Fig. 3.

Referring to the drawings, A represents the driving-shaft, which issupported at one end by resting on the wall B, andat its other end bythe bearing 0, forming part of the frame of the machine.

D represents a tight pulley, and E a loose 5o pulley, on the shaft A.

K represents the knife-carrying block, and M the cutting-knife carriedthereby. S is the wood to be cut.

O is the bed of the machine. The block K slides up and down on thepillars J J of the frame of the machine, and is reciprocated by thepitman H, connected at its lower end to the pin L in the block and atits upper end to the crank-pin G, mounted 011 a disk-crank F, fixedtothe end of the shaft A. The disk-crank F is preferably mounteddirectly in the bearing 0 and provided with a peripheral rib, whichtakes into a corresponding groove in the bearing, and thereby serves toprevent the escape of the disk-crank from the bearing. This construe--tion provides a large lubricating-surface in the bearing, which isdesirable in View of the friction caused by the resistance of the Woodon the downstroke of the knife.

The knife M is bolted to the block K in any suitable manner, and as itrcciprocates with the block it cuts off a disk of wood from the end ofthe log, at the same time crushing the cut-off disk owing to the shapeof the knife and to the fact that the knife cuts across the grain of thelog. As the knife M descends,it passes in close proximity to the edge ofthe lower or bed knife N, against which the under side of the log isresting, which latter knife is mounted in the bed-plate O of the frame.

The knife-block K is made very heavy in order that its weight andmomentum in de scending will facilitate the cutting operation byovercoming to a certain extent the resistance of the knife as it passesthrough the wood. To counterbalance the weight of the block K and thepitman H and crank-pin G, we provide a counter-weight D preferably onthe periphery of the tight pulley D. The counter-weight D is arrangeddiametrically opposite the crank-pin G, and serves normally tocounterbalance the moving parts, and thereby to prevent jars and strainsin running the machine and to facilitate the raising of the knife-blockK.

The log S is fed forward the distance desired during each upstroke ofthe knife M, and is held stationary during each downstroke thereof. Thisis accomplished by means of a feeding-mechanism which consists,preferably, of a rotatable feeding-roller Q, against which the logrests, and two idle'rrollers RR. This roller a is carried by thebed-plate O, and is provided with a ratchetwheel P on its axle. Motionis imparted to the roller Q by a pawl P, mounted on a lever p fulcrumedon the axle of the roller, and extending thence forwardly and carryingon its outer end a vertical rod P. The rod P extends upwardly in frontof the block K, and is engaged by an arm K, secured to the block andmoving therewith. The upper end of the rod P is screw-threaded, and oneor more nuts p are screwed thereon. As the arm K is raised by theupstroke of the block K it strikes the nuts 1;) on the upper end of therod P, and thereby raises the latter until the block K has reached thelimit of its upstroke. While the rod P is being thus raised, itpartially rotates the feeding-roller Q through the medium of the lever19 and the pawl P, thereby feeding forward the log S. As the block Kdescends again, the rod P and the lever 19 descend until the stop Psecured to the lever p,strikes the bed of the machine and prevents thefarther falling of the lever. By this means the log S'is fed forward anequal distance for each cut of the knife. By adjusting the nuts 19', theextent of movement of the rod P may be increased or diminished,

and thereby the feed of the log can be regulated as desired.

The log is fed along at the proper angle and at the same time ismaintained in frictional contact with the rotating feed-roller Q bymeans of the two additional idler feed and pressure rollers R R, onebeing above and the other below the log S. These may be pressed againstthe log so as to cause sufficient pressure upon the log to cause thesame to be fed by the roller Q by any well-known means; but we prefer toaccomplish this by means of a suspended weight in the manner illustratedin Fig. 3, which will be hereinafter described. The relative movementsof the rollers R R toward each other enable them to grasp logs ofvarying diameters.

We have shown the frame of the cuttingmachine as constructed of thebed-plate O,

with two upright posts J J bolted thereto,

and the cross-head having the bearing 0 bolted to the upper ends ofthese posts; but any other suitable construction will answer.

In mechanically preparing wood for the manufacture of cellulose or woodpulp by our machine, the wood is taken as it comes from the forest inlogs or sticks, which are first peeled to remove the bark and arethereupon placed directly in the cutting-machine. The log is placedbetween the pressure-feeding rollers R R, and rests on the bed-knife N,and in contact with the rotating feedingroller Q. The log may be placedat any desired inclination, so that the knife will cut off disks orchips either directly across the grain of the wood or at an anglethereto. As the knife descends through the log, the disk as it is outoif is crushed by the knife and falls in front of the machine in afibrous condition. As the knife ascends after the cut, the feedingmechanism drives the log forward an equal distance each time, so thatthe length of the fibers cut OR is uniform throughout the operation. Anyknots, splints, or other useless part of the fibers can be readilyremoved by hand from the cuttings as they fall from the knife, and thusa careful assorting of the fibers can be easily made. The Wood preparedin this manner is-well adapted for boiling or other treatment directlyas it leaves the cutting-machine, since by the complete loosening of allthe longitudinal fibers and by reason of the equality of their length,they are evenly exposed to the action of the chemicals used in treatingthe mass, and they furnish an even material, which is a most importantrequisite in the manufacture of cellulose or paper-pulp.

()ur invention may be variously modified in certain of its parts withoutdeparting from the essential features thereof. In Figs. 3, 4., and 5 wehave shown another form of feed ing mechanism, wherein thefeeding-rollers only are used. In this construction U is a bracketadapted to be bolted to the bed-plate O. This bracket carries two slidesU U,which are dovetailed on the upper side of the bracket and which eachcarry a feeding and squeezing roller T. The rollers T T grip the logbetween them and are forced together against the sides of the log by asuspended weight Y, as best seen in Fig. 3. Rack-arms X X are pivotedone to each of the slides U, and extend thence to and engage with apinion w. The pinion w is mounted at the side of the machine, and has agrooved wheel W fixed on its shaft. A rope or belt is secured to thiswheel and extends thence to and over a pulley y and is connected to aweight Y. The wheel W, the belt, the pulley y, and the weight Y are allshown in dotted lines. The tendency of the weight Y is to rotate thepinion w in the direction of the arrow and consequently through therack-bars X X to force the rollers T T together, thereby causing them tograsp the log irrespective of its diameter. The feeding mechanism isdriven in the same manner as that shown in Fig. 2. P is a ratchet-wheelmounted in the bracket U. The shaft of the wheel P extendslongitudinally of the bracket and carries two bevel-gears V V, which arefeathered to the shaft in such manner that they can slide longitudinallythereon but must rotate therewith. The rollers T T are provided with twospindles, which extend through the slides U U, and on the lower ends ofthese spindles are fixed bevel-gears V V, which mesh with the bevelgearsV V on the shaft of the ratchet-wheel. The spindles of the rollers T areextended slightly beyond the bevel-gears V V, and this extended portionof the spindles engages a groove in the collar of the bevel-gears V V,so that as the slides U U are moved by the weight Y the bevel-gears V Vare caused to move correspondingly and are kept in mesh with thebevel-gears V V, as best seen in Fig. 4. As the ratchet-wheel P isdriven as described with relation to Fig. 2, the bevel-gears V V on itsshaft are correspondingly rotated, and by meshing with the bevel-gears VV motion is imparted to the latter, and the feeding-rollers T T arerotated, thereby feeding the log forward. It will be seen that theaction of the rollers T T in grasping the log is independent of thefeed, and that they exert a constant pressure on the log at all times.The two rollers T T are thus not onlyfeedingrollers for positivelyfeeding the log, but they are also pressure-rollers as well. They thuscombine and fulfill the functions of the positively-acting feed-roller Qin Figs. 1 and 2, and of the idler pressure-rollers R R also. It will beobserved that the positive rotation of the rollers T T is accomplishedby the same mechanism as that of the roller Q. Owing to the rollers T Tbeing positively driven, special provisions (such as have been alreadydescribed) are necessary to make them forcibly grasp and apply pressureto the logs. These special provisions are not necessary where theidler-rollers are employed. Pressure may be given to the idler-rollersby means of weights V, as in the case of rollers T T, or the journals ofthe lower roller B may be immovable, in which case the weight of theupper 'roller R would be relied upon to give the desired pressure.

In operation when the crank-pin reaches the highest point, thedriving-power, in conjunction with the weight of the block K, begins tooperate upon the wood to be out, and drives the knife M through thewood, so that it, in connection with the knife N, cuts and crushes thewood at the same time. Thereupon the block K ascends again. Its arm Klifts the ratchet P, which, through the feeding mechanism, advances thelog for the next cut.

I claim, in a machine for feeding and cutting wood, the followingdefined and novel features and combinations,substantially ashereinbefore set forth, namely: 1

1. The combination, with the reciprocating cutting-knife, of the feedingmechanism for feeding the wood, and an adjustable connection between theknife and the feeding mechanism, so constructed that during thecuttingstroke of the knife the wood will be stationary and during thereturn-stroke the connection will be actuated and the feeding mechanismoperated.

2. The combination, with the cutting-knife and the feeding mechanism forfeeding the wood, of movable feeding-rollers which bear upon the woodand exert a continual pressure on the Wood during both the cutting andfeeding operations.

The wood cutting and crushing machine for the production of looseneddisks of wood of equal thickness, consisting of the shaft A with thedisk-crank F thereon, the bearing O for the latter, the reciprocatingknife-block K, the pitman H, connecting said disk-crank and knife-block,the knife M, carried by the latter, the bedknife ,N for receiving thewood to be cut, in combination with the feeding mechanism for feedingthe Wood to the knife, and connecting devices between the knife andfeeding mechanism for operating the latter, said feeding mechanismincluding pressure-rollers,which exert a continual pressure against thewood.

4. The adjustable and movable supports U U, movable to and from eachother, racks X X, attached to said supports, respectively, and a pinionw, co-operating with said racks, in combination with feed-rollers T T,journaled in said supports U U, respectively, a ratchet Z, the shaftthereof, and intermediate bevel-gears VV on each roller-shaft, and saidratchet-shaft Z, respectively, substantially as set forth.

In witness whereof we have hereunto signed our names .in the presence oftwo subscribing witnesses.

JULIUS n. v. KINK.

JOHANN GEORG KREIS;

W i tn esses O'rro SCHIFFER, CARL FRoMowIcz.

